Sheet material



FIG. 1 is a front view of a first embodiment of a sheet material;

FIG. 2 is a front view of a second embodiment of a sheet material; and,

FIG. 3 is a front view of a third embodiment of a sheet material.

The broken lines surrounding each figure denote the boundaries of the claim and form no part thereof. 

CLAIM The ornamental design for a sheet material, as shown and described. 